I've had good luck with this Suntour Comp-V that's been on my bike for years. Not high end or fancy but it's not ugly either. I'm running a 34/42/52. The longer cage deraillers are nice with a 26 but when you slide it down the seat tube to reach the 46 you might start hitting the chainstay.
Mine looks like this;
VINTAGE SUNTOUR COMPE-V FRONT DERAILLEUR (GRE/F-001)